/*
 * Copyright (c) 2022 - Manifold Systems LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package manifold.internal.javac;

import manifold.rt.api.util.ServiceUtil;
import manifold.util.concurrent.LocklessLazyVar;

import java.util.HashSet;
import java.util.Map;
import java.util.Set;

public interface ITupleTypeProvider
{
  LocklessLazyVar<ITupleTypeProvider> INSTANCE =
    LocklessLazyVar.make( () -> {
      Set<ITupleTypeProvider> registered = new HashSet<>();
      ServiceUtil.loadRegisteredServices( registered, ITupleTypeProvider.class, ITupleTypeProvider.class.getClassLoader() );
      return registered.iterator().next(); // should only be one
    } );

  String makeType( String pkg, Map<String, String> fieldNameToTypeName );

  Set<String> getTypes();

  Map<String, String> getFields( String fqn );
}
